6 papers
AFDM-FTN: A Spectrally Efficient Waveform for High-Mobility Communications
Xianle Dai, Qu Luo, Jianguo Li +4
This paper proposes an affine frequency division multiplexing (AFDM)-aided faster-than-Nyquist (FTN) waveform, termed AFDM-FTN, to enhance spectral efficiency (SE) in high-mobility…
Towards Standardizing Affine Frequency Division Multiplexing (AFDM) for Future Wireless Networks
Qu Luo, Lixia Xiao, Pei Xiao +6
Affine frequency division multiplexing~(AFDM) has emerged as a compelling waveform candidate for future wireless networks, owing to its strong resilience to doubly selective channe…
Joint Phase Noise and Off-Grid Channel Estimation for AFDM Systems via Sparse Bayesian Learning
You Xu, Huaijin Zhang, Lixia Xiao +2
In practical affine frequency division multiplexing (AFDM) systems, the intricate coupling of oscillator phase noise (PN) and off-grid fractional shifts traps conventional estimato…
Advanced Codebook Design for SCMA-aided NTNs With Randomly Distributed Users
Tianyang Hu, Qu Luo, Lixia Xiao +3
In this letter, a novel class of sparse codebooks is proposed for sparse code multiple access (SCMA) aided non-terrestrial networks (NTN) with randomly distributed users characteri…
Amplitude-Domain Reflection Modulation for Active RIS-Assisted Wireless Communications
Jing Zhu, Qu, Luo +5
In this paper, we propose a novel active reconfigurable intelligent surface (RIS)-assisted amplitude-domain reflection modulation (ADRM) transmission scheme, termed as ARIS-ADRM. T…
Design and Performance Analysis of Index Modulation Empowered AFDM System
Jing Zhu, Qu Luo, Gaojie Chen +2
In this letter, we incorporate index modulation (IM) into affine frequency division multiplexing (AFDM), called AFDM-IM, to enhance the bit error rate (BER) and energy efficiency (…